I am interested in all of these majors but I can’t narrow it down to 3, with consideration to job outlook, salaries, types of work, and etc.
Well, I think some of it depends on what you want to do.
Nursing is a pre-professional major…you major in nursing, generally speaking, to become a nurse. Now, there are lots of different ways to be a nurse - not all nurses work in hospitals; some get master’s degrees and provide primary care; and some eventually go into nursing-adjacent roles like health care/insurance consulting or research. I also know a nursing major who works as a program officer at my tech company (although he double majored in something else). So you don’t have to be a nurse forever, or even initially, and you can use your nursing expertise to go do something else. But usually as a new nurse grad you will probably be working in a hospital - or maybe a doctor’s office - as a traditional nurse for the first 2-4 years. (And if you do want to do something nursing-related later - like becoming a health care consultant - usually those places want you to have some hospital experience working as an actual nurse for a few years first.)
Also keep in mind that at most universities the nursing program is competitive. Some programs have direct-entry, in which you are admitted your freshman year, but many programs require you to complete the prerequisites first for 2 years and then apply to the nursing program.
Biomedical engineering is also more pre-professional, in that the goal is to prepare you to be a biomedical engineer (although of course there are lots of other things you could do). It’s also healthcare related but quite different from nursing. Are you good at math and science? Do you want to build health and medical devices and innovations?
Psychology and neuroscience are related majors and both are liberal arts majors, meaning they don’t prepare you for any specific kind of career. They’re both super interesting - I was a psychology major in undergrad, and there are lots of opportunities for psychology and social science majors to pursue with a BA after college. You’d need to acquire additional skills and experiences (like internships) to adequately prepare you for the workplace and job search - statistics, research, and communication/writing are the three biggest ones. If you wanted to be a psychologist or neuropsychologist, you’d have to get a PhD.
Pharmacy typically isn’t an undergrad major; you usually can prepare for pharmacy school by majoring in some natural or physical science field, though.